If a gas occupies 8.9 liters at a pressure of 745 mm Hg, what volume would it have at 725 mm Hg?

1 Answer
anor277
Feb 7, 2017

Approx. #9.1*L..........#

Explanation:

Charles' Law states that at constant temperature, and a given quantity of gas, the product #PxxV=k#. We don't even have to convert the pressure readings to atmospheres given the proportionality.

And thus, the volume of the gas should increase at reduced pressure, and indeed it does.

#P_1V_1=P_2V_2#

#V_2=(P_1V_1)/P_2=(8.9Lxx745*mm*Hg)/(725*mm*Hg)=??*L#

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